Carbureting-screen for intake-valves



F. W. LAPHAM.

CARBURETING SCREEN FOR INTAKE VALVES.

APPLICATION FILED FEB. 10. 1919.

1,340,062. Patented y 11, 1920.

i i 7 Z .i Z 9 7/ J 4 I 1 6 ATTORNEYS are r oration.

CARBURE'IING-SCREEN FOR INTAKE-VALVES.

specification of Letters Patent.

Patented May 1 i. taco Application filed February 10, 1919. Serial No.276.091.

To all whom it may concern Be it known that I, FRANK W. LAPHAM, acitizen of the United States, and a resident of Lake Beulah, in thecounty of Walworth and State of isconsin, have invented a new andImproved Carbureting- Screen for Intake-Valves, of which the followingis a full, clear, and exact description.

This invention relates to screens for intake valves of internalcombustion engines and has for an object the provision ofan improvedstructure which is positioned to break up and carburet to a desirableextent incoming fuel.

Another object of the invention is to provide a hood-or covering memberfor the intake valve of an ir'irnal combustion engine, the hood beingformed of wire mesh and positioned to completely surround the inletopening so that the fuel must pass therethrough.

A further object of the invention is to,

' provide a hood and means for clamping the same in place over theintake valve of an internal combustion engine, the hood being made ofwire mesh having wire mesh sides and a wire mesh top, the structurebeing such that it will become heated during the use of the engine andwill thereby distribute the heat to the incoming fuel so as to gasifythe fuel even though the same may be of the more or less heavier kind,as for instance kerosene. r

In the accompanying drawing:

Figure 1 is a fragmentary vertical sectional view through an internalcombustion engine with an embodiment ofthe invention shown appliedthereto.

Fig. 2 is a top planview of the carburet ing screen shown in Fig. 1, thesame being on an enlarged scale. v

Fig. 3 is a sectional view through Fig. 2 on line 33.

Referring to the accompanying drawing by numerals, 1 indicates thecylinder of an ordinary internal combustion engine, said cylinderaccommodating a piston 2. The cylindc is provided with the usualcompression chamber 3 into which opens the inlet opening 4 provided withthe usual inlet valve 5 operated in any desired or usual manner. Asuitable intake manifold 6 is in communication with the inlet 4 so thatan explosive mixture is supplied in the usual manner to the cylinderwhen the engine is in operation. Where gasolene or other rather highlyvolatile oil is used the carburetion is suliicicntly. perfect afterleaving the carbureter to produce the desired results, however, when theengine is cold or when a heavier oil is used, as for instance kerosene,the carburation is not so complete. and consequentlythe engine will notact in such an efficient manner. .To cause the engine to act in a highlyefficient manner with not only gasolene, but kerosene or other similaroil, the carbureting screen cap 7 is provided which is fitted over theinlet l as well as the valve 5 whereby the explosive mixture must passthrough the mesh of this cap before it can enter the chamber 3 of thecylinder 1. This cap may be made of any desired metal, as for instancecopper, and of any desired mesh, preferably a tine mesh. The cap may 0open at the top, though it is preferably formed with a top structureintegral with the sides. whereby it is impossible for any part of theexplosive mixture to pass in otherwise than through the cap.

lhe bottom of the cap is provided with a flange 8 clamped between therings 9 and 10, said rings being metal or other material as preferred.These rings are provided with registering apcrt ures 11. for receivingscrews 12 which rigidly secure the cap in place as.

shown in Fig. 1. \Yhcn the explosive mixture passes into the cap it willstrike the mesh and not only become tincly divided, but will becompletely carbureted, which carlmrationis hclpcd greatly by the factthat the cap becomes heated to a certain extent and consequently thesmall streams of combustible mixture passing through the mesh will beimlividually heated and consc quently raised to such a temperature as tounite mechanically with the air and to thereby produce a betterexplosive gas for the engine. In addition to carbiu'cting in a bettermanner the incon'ling combustible matter the cap acts as a carblu'et-ingclement for the priming cup 13 which is ar ranged either directly in thecasing 1 or in a suitable fitting 1 4. As the priming fluid passes fromthe cup into the chamber 3 it will strike the cap 7 and be finelydivided, and in this way become more or less gasitied so as to becomeignited at the proper time.

What I claim is:

1. The combination with an internal combustion engine having an intakeport set off to one side, and a priming cup in line with the intakeport, of a wire mesh cap fitting over said intake port and extendingtoward the priming cup, and means for rigidly clamping the wire mesh capin place so that all of the incoming explosive mixture passingthroughsaid port must pass through said cap, said cup being arranged so thatmost of the priming fluid from the priming cup will pass through the capand become finely divided thereby.

2. The combination with an internal combustion engine having an intakeport, of a foraminous member extending above and across the intake portand adapted to be heated by the gases from tl'ie cylinder o the engine,and a priming device connected with the cylinder and arranged todischarge the liquid fuel upon the foraminous member.

3. The combination with an internal combustion engine having an intakeport, of

a cap arranged above and surrounding the intake port and formed of Wiregauze, and a prlmlng cup arranged above the cap and adapted to feed thefuel directly upon the cap.

FRANK LAPHAM.

